Improvement in adding-machines



C. C. 81.1. B. MUORE. AddingMachines. No.l52,670. Pazenredmnesonm.

7INVENTDB mmv ATTUBNEYS.

Alfil/WIN HAMMAM/lt' ta M I {asian/13* Mauss:

UNITED STATES PATENT OFFICE.

CHARLES C. h'IOOBE ANI) JACOB B. MOORE, OF Nl'fllV YORK, N. Y.

IMPROVEMENT IN ADDING-MACHINES.

Specification forming part of Letters Patent No. 152,670, dated June 30, 1874; application filed April 25, 1874.

To alt wiz/(m1, 'it may concern:

Be it known that we, CHARLES C. MOORE and JACOB B. MOORE, ofthe city, county, and State of New York, have invented a new and useful Improvement in AddinglVIachine, ot' which the following is a specilication:

Figure l is a front view of our improved machine, part of the face-plate being broken away to show the counting-wheels. Fig. 2 is the same view as Fig'. l, with the face-plate, the counting-wheels, and the main plate removed, and showing the ratchetwheels in the position which they have when the counting-wheels all stand upon' the .fl-point. Fig. 3 is the same view as Fig. 2, but showin g the carrying device in various positions. Fig. 4 is a cross-section taken through the line .r a',

iligs. l and 2. Fig. 5 is a side view of a tool for working the machine. l

Similar letters oi reference indicate corre spondin g parts.

Our invention has for its object to i'uri'lish an improved adding-machine, which shall be so constructed as to carry accurately whatever number of wheels be used, bringing each wheel exactly to the required point and leaving it there, and which shall have no lost motion from the imperfection oi' gearing-teeth. 'Ihe invention consists in the push-rods, the keepers, the guiderods, and the loose sleeves, in combination with the ratchetwheels ot` the counting-wheels for transmitting motion from one of said wheels to another in carrying'.

A represents the box or base-frame of the machine, which is made with a cavity in its forward part to receive the ratchet-wheels and the carrying devices. To the plate or frame A is secured the main plate B, in bearings, in which works a row of short shafts, C, to the forward ends of which are attached the counting wheels or disks l), in which, near the circumference, is formed a circle of ten holes, all, to receive the point of an instrument for turning said wheels l). In the faces of the wheels D, just within the circle of holes d1, and concentric therewith, is form ed a circle, d2, of numbers, consisting` of' the nine digits and the cipher, also placed equally distant from .each other, and in the same radiuscs with the holes di. Upon the faces ofthe wheels l), within the circle of numbers d2, concentric therewith, and upon the saine radiuses, is formed a second circle, d, of numbers, consisting ot' the nine digits and the cipher, and so aranged that each number ot' the inner circle may be the complement of the number of the outer circle d2 of numbers upon the other side of the centers of said wheels. In the faceplate lil, that covers the counting-wheels I), are formed circular slots el, directly over the circle of holes dl of the said wheels D, the ends of which do not quite meet, a neck heilig' left equal in width to, or a little less than, the distance between the consecutive holes in the circle of holes (Z1. In the upper edge of the disk formed by the slot c1 is formed a notch, c2, of such a size as to allow one number, and only one, of the circle of numbers d2 to be seen. Upon the opposite side of the centers of the wheels l), and in the same diameter with the notch c2, is formed a hole, c3, of such a size and in such a position as to allow one of the numbers ot' the inner circle of numbers di to be seen. By this arrangement the numbers seen through the notch c2 and the hole ci will always be the complements of each other, so that the number seen through the hole c will always indicate through the space of how many holes the wheels I) will have to be turned to bring the wheels to the O-point. The neel: of the disk formed by the curved slot c2 serves as a stop to the instrument, by which the wheel l) is turned, and should be in such a position that when the instrument is stopped its point may be in line with the notch c, hole c3, and the center of the wheel I). Upon the plate E, around the outer edge otl the slot c1, and equally distant apart, except the first and last, are placed the nine digits c4, beginning at the stop and passing around to the left, the wheel l) being turned to the right in counting'.

In using the machine, the instrument is inserted in the hole or' the wheel D, opposite the digit of the scale c4 that represents the number to bc added, and is moved around to the right until it strikes the stop. The units, tens, hundreds, &c., are added by turning theproper wheels. In turning either of the wheels I), as each ten oil the column of liigures being added is reached, the next wheel is turned one space, the carrying being thus done automatically.

The wheels D are kept from being jarred out of place, or accidentally turned forward or baek, by springs E, attached to the plate '3, and which rest against the edges ot said wheels with sut'lieient force to give steadiness to their movements, and to prevent them from being accidentally jarred or moved out of their places. To the other end ot' the shaft C, upon the under side ot' the main plate l5, are attached ratchet-wheels G, to a tooth ot' each ot'whieh is pivoted a push-rod, Il, of such a length and in such a position that when the figure 9 of the scale d'2 shows through the notch ci, the forward end ot' the said pushrod may rest against a tooth ot' the nextratchetwheel, ready to move it one tooth when the iirst ratchet-wheel is again moved. The pushrod H passes through a long keeper, I, attached in an inclined position to the plate B. To the push-rods H, at or near their pivoted ends, are attached the ends of the guide-rods J, which are curved so as to pass i'arther and farther awa)v from the said push-rods H. The guide-reds JV pass through eyelets or tubular sleeves K, placed upon the lower arm ot the keepers l, as shown in Figs. 2 and 3, which gives it a play ot halt its cavitv upon the said arm.

By this construction, if' soon as a push-rod again to operate said next wheel, when itnioves forward, moves the said wheel one tooth, and again drops away. It will be observed that when the figure 9 of the scales d2 of all the wheels l) show through the notches 02 all the push-bars H are in line, as shown in Fig. 2, so that a movement of the iirst wheel one space will move all the wheels one space. The -gures of the inner scale ot' digits, seen through the hole c, are simplv used for bringing all the wheels I) to the O-point to adjust the machine for beginning a calculation, and to tell in what hole Il to place the instrument to bring the wheel to said point. L is a plate having a blackboard oi"` slate surface, and which is combined with the counting mechanism for convenience in writing down the numbers to be added, the rcresults, andother desired memoramlums. Any desired number ot' wheels may be used, and each ratchet-wheel, except the last, should be provided with a carrying device, and the result is read from the tigures seen through the notches c? in their consecutive order.

Having thus described our invention, we claim as new and desire to secure b v Letters Patentrlhe push-rods H, keepers I, guide-rods J, and loose sleeves l( in combination with the ratchet-wheels G ot' the countingwhcels l), for transmitting motion from one ot' said wheels to another in carrying, substantially as herein shown and described.

CHARLES C. MOORE. JACOB B. MOORE.

Witnesses:

.Lunas T. GRAHAM, T. E. Mosnna. 

